package com.nengyuan;

public class My {
    public static void main(String[] args) {
        String s1 = "hello java";

        String s2 = "hello java";

      if (s1.equals(s2)){


          String res01 = s1.replace(" ", "");

          System.out.println(res01);

          String yy = res01.replace("java", "word");
          System.out.println(yy);


      }
    }
}
